The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2001
Filed:
Sep. 10, 1999
Applicant:
Inventor:
Roger Navarro, Pamiers, FR;
Assignee:
Pierre Fabre Dermo-Cosmetique, Boulogne-Billancourt, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10C 1/20 ; C10C 3/02 ; C10C 1/04 ; C10C 3/06 ; A61K 3/578 ;
U.S. Cl.
CPC ...
C10C 1/20 ; C10C 3/02 ; C10C 1/04 ; C10C 3/06 ; A61K 3/578 ;
Abstract
The invention concerns a coal tar extract with reduced polycyclic aromatic hydrocarbon and benzo(a)pyrene content and a method for obtaining same using two sequentially linked distillation systems. The invention also concerns cosmetic and dermatological preparations containing said resulting coal tar extract.